I just want to add my own nickel worth, and share something that happened in my own life. I have always been a picky eater. At around ten or so I went thru a period of six months where the only things I would eat were tuna sandwiches and Swanson chicken pies. As I was a constantly underweight child, my family gave in and let me eat what I wanted, as long as I ate SOMETHING. I suspect the food binge was a reaction to these sorts of deception, I could trust something that I watched go from freezer box to oven to table. Likewise, the sandwiches were made of identifiable ingredients; if there was anything "odd" such as a bit of color from a chopped carrot, it was rejected. Uniform tuna grey =acceptable.
As an adult, I married. My hubby had the same sort of "It's good for you" high-handed attitude as these authors. He insisted that I would "love" salsa, green peppers, etc. if only I would TRY them. Initially I humored him, explaining that I HAD tried the various things in the past, and knew what I did and did not like. Later, many of our worst arguments were over things like his failing to be considerate enough to remember to order pizza with green peppers only on his half. On one occassion, he stirred salsa into BBQ sauce. I tasted it immediately. As far as I was concerned, the betrayal was on the same level as if he'd stirred in arsenic or strychnine. Sheer rage. Needless to say, we are no longer together.